NL245961A - - Google Patents

Info

Publication number
NL245961A
NL245961A NL245961DA NL245961A NL 245961 A NL245961 A NL 245961A NL 245961D A NL245961D A NL 245961DA NL 245961 A NL245961 A NL 245961A
Authority
NL
Netherlands
Prior art keywords
fuel
grids
stainless steel
steel
contain
Prior art date
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication date
Publication of NL245961A publication Critical patent/NL245961A/xx

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/02—Fuel elements
    • G21C3/04—Constructional details
    • G21C3/06—Casings; Jackets
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C7/00—Control of nuclear reaction
    • G21C7/02—Control of nuclear reaction by using self-regulating properties of reactor materials, e.g. Doppler effect
    • G21C7/04—Control of nuclear reaction by using self-regulating properties of reactor materials, e.g. Doppler effect of burnable poisons
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C7/00—Control of nuclear reaction
    • G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
    • G21C7/22—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of a fluid or fluent neutron-absorbing material, e.g. by adding neutron-absorbing material to the coolant
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

913,655. Controlling reactors. BABCOCK & WILCOX CO. March 16, 1959 [March 14, 1958], No. 8969/59. Class 39 (4). A water moderated reactor is controlled by a combination of absorber rods, burnable poison in the fuel elements, and soluble poison in the moderator. Fig. 1 shows a P.W.R. 10 with rods 11 of B, Hf, stainless steel, or an alloy of cadmium, indium and silver. The moderatorcoolant circuit includes a pressurizer 12, a steam generator 14, and pumps 16. Boric acid solution may be added up to 21 gm./litre from a tank 202, and removed by an anion exchanger 226, or by an evaporator 230 after fission products have been removed in a cation exchanger 228. Each fuel element includes 500 p.p.m. of boron in its Zircaloy 2 sheath 94 or 200 p.p.m. mixed with the fuel; Eu may also be used. The sheaths contain fuel pins 98, comprising highly enriched UO 2 -ThO 2 pellets in stainless steel cladding, mounted in grids; the pins contain heat transfer fluid such as He, Pb, Na. The sheaths fit in support grids with sprung adapters, and their sides are recessed at 94B to leave cruciform spaces for the control rods 128. Fuel elements in the centre of the core contain 5.3% UO 2 , those outside 6.6% UO 2 , the balance being ThO 2 . The pressure vessel is of stainless steel-lined carbon steel surrounded by steel wool and a tank of water, and contains the core supported between grids and enclosed by three steel thermal shields. Specifications 775,151, 775,156, 913,653, 913,654 and U.S.A. Specifications 2,708,653, 2,735,811, 2,756,857 and 2,798,847 are referred to.
NL245961D 1958-03-14 NL245961A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US72140458A 1958-03-14 1958-03-14
US77765358 US3103476A (en) 1958-03-14 1958-12-02 Fuel element with burnable poison within the cladding

Publications (1)

Publication Number Publication Date
NL245961A true NL245961A (en) 1900-01-01

Family

ID=40336525

Family Applications (1)

Application Number Title Priority Date Filing Date
NL245961D NL245961A (en) 1958-03-14

Country Status (7)

Country Link
US (1) US3103476A (en)
BE (1) BE585200A (en)
CH (1) CH359491A (en)
DE (1) DE1176766B (en)
FR (1) FR1242102A (en)
GB (2) GB913655A (en)
NL (1) NL245961A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3427222A (en) * 1965-10-15 1969-02-11 Westinghouse Electric Corp Nuclear fuel elements
US3432389A (en) * 1966-07-25 1969-03-11 Combustion Eng Core design for nuclear reactor
NO117432B (en) * 1968-04-06 1969-08-11 Atomenergi Inst For
US3625821A (en) * 1968-06-26 1971-12-07 Westinghouse Electric Corp Fuel-element coating containing burnable poison
DE3128652A1 (en) * 1981-07-20 1983-02-03 Interatom Internationale Atomreaktorbau Gmbh, 5060 Bergisch Gladbach CASE WITH DISTANCE BRACKETS FOR FAST BREEDING REACTORS
FR2520916B1 (en) * 1982-02-03 1986-04-18 Fragema Framatome & Cogema FUEL ASSEMBLY WITH CONSUMABLE POISON
US4640813A (en) * 1984-09-26 1987-02-03 Westinghouse Electric Corp. Soluble burnable absorber rod for a nuclear reactor
US4717534A (en) * 1985-02-19 1988-01-05 Westinghouse Electric Corp. Nuclear fuel cladding containing a burnable absorber
US4695476A (en) * 1985-06-06 1987-09-22 Westinghouse Electric Corp. Process for coating the internal surface of zirconium tubes with neutron absorbers
US5241571A (en) * 1992-06-30 1993-08-31 Combustion Engineering, Inc. Corrosion resistant zirconium alloy absorber material
GB2318902B (en) * 1996-11-02 1998-09-23 British Nuclear Fuels Plc Neutron absorbing coating
US10546661B2 (en) 2014-06-23 2020-01-28 Free Form Fibers, Llc Additive manufacturing technique for placing nuclear reactor fuel within fibers
CN105693524A (en) * 2014-11-28 2016-06-22 浙江省化工研究院有限公司 A preparing method of nitro compounds

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843539A (en) * 1955-05-16 1958-07-15 North American Aviation Inc Samarium compensator method for nuclear reactor fuel
GB796989A (en) * 1956-02-06 1958-06-25 Gen Electric Improvements relating to neutronic reactor fuels
US2873242A (en) * 1956-06-29 1959-02-10 Treshow Michael Neutronic reactor system

Also Published As

Publication number Publication date
GB913655A (en) 1962-12-19
DE1176766B (en) 1964-08-27
GB931286A (en) 1963-07-17
US3103476A (en) 1963-09-10
BE585200A (en) 1960-04-01
CH359491A (en) 1962-01-15
FR1242102A (en) 1960-09-23

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